Title:
ACTIVE NOISE REDUCTION METHOD AND SYSTEM, AND NEW ENERGY VEHICLE
Document Type and Number:
WIPO Patent Application WO/2019/080505
Kind Code:
A1
Abstract:
An active noise reduction method and system, and a new energy vehicle. The method comprises the following steps: obtaining the frequency of a high-frequency noise signal in an acoustic environment; constructing and generating a harmonic masking signal according to the frequency of the high-frequency noise signal, the harmonic masking signal comprising a harmonic signal and a masking signal, and the harmonic signal being a sub-harmonic wave of the high-frequency noise signal; and inputting the harmonic masking signal to a sound playing apparatus for playing, so as to output a noise reduction construction sound to implement noise reduction on the acoustic environment. The active noise reduction method can further improve the sound quality of an acoustic environment, and the method is easy to operate and low in costs.
Inventors:
SUN YAXUAN (CN)
ZHAO YONGJI (CN)
ZHAO YONGJI (CN)
Application Number:
PCT/CN2018/090099
Publication Date:
May 02, 2019
Filing Date:
June 06, 2018
Export Citation:
Assignee:
BYD CO LTD (CN)
International Classes:
G10K11/178; B60R16/037; F01N1/00; G10K11/175
Foreign References:
| CN102982798A | 2013-03-20 | |||
| CN206475875U | 2017-09-08 | |||
| CN104835490A | 2015-08-12 | |||
| CN206299429U | 2017-07-04 | |||
| EP3040984A1 | 2016-07-06 |
Other References:
See also references of EP 3703048A4
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC (CN)
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